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Air/Oil Heat exchanger with stainless steel pipe

Air/Oil Heat exchanger with stainless steel pipe

Air/Oil Heat exchanger with stainless steel pipe

(OP)
I would appreciate if anyone can give me some guidance - especially an approximate overall heat transfer coefficient - for a simple heat exchanger comprising oil in plain stainless steel pipes cooled by air blown across them.  Stainless steel is used because of corrosion.  I am aware of its poor heat transfer but assumed the air/pipe interface would control the heat flow.  This isn't my field so any assistance would be gratefully received.

Thanks

RE: Air/Oil Heat exchanger with stainless steel pipe

You are right, the dominant resistance is on the air convection side. An approximate -quite low- overall heat transfer coefficient (OHTC) would be 0.15 W/(m2.oC).

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